Piezoelectric printing device with single layer inner electrode
a printing device and piezoelectric technology, applied in printing and other directions, can solve the problems of unwieldy structure, large size of piezoelectric printing device, and difficulty in addressing the problem of piezoelectric printing device, and achieve the effect of reducing variability of drop volume and drop velocity, high printing resolution, and high efficiency of drop ejection
Active Publication Date: 2022-03-29
SUZHOU RUIFA PRINTING TECH CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
This configuration enables efficient drop ejection with reduced variability in drop volume and velocity, facilitating compact and reliable electrical connections, and allowing for high-resolution and fast printing throughput.
Problems solved by technology
Piezoelectric printing devices also have technical challenges that need to be addressed.
However, with many staggered rows, the size of the piezoelectric printing device becomes large.
A further challenge is that, unlike thermal inkjet printing devices that typically include integrated logic and driving electronics so that the number of leads to the device is reduced, a piezoelectric printing device typically has individual electrical leads for each drop ejector that need to be connected to the driving electronics.
Individual piezoelectric plates are provided for each drop ejector, resulting in a structure that would be unwieldy to manufacture with large arrays of drop ejectors at tight spacing.
Method used
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Embodiment Construction
[0039]The invention is inclusive of combinations of the embodiments described herein. References to “a particular embodiment” and the like refer to features that are present in at least one embodiment of the invention. Separate references to “an embodiment” or “particular embodiments” or the like do not necessarily refer to the same embodiment or embodiments; however, such embodiments are not mutually exclusive, unless so indicated or as are readily apparent to one of skill in the art. The use of singular or plural in referring to the “method” or “methods” and the like is not limiting. It should be noted that, unless otherwise explicitly noted or required by context, the word “or” is used in this disclosure in a non-exclusive sense. Words such as “over”, “under”, “above” or “below” are intended to describe positional relationships of features that are in different planes, but it is understood that a feature of a device that is “above” another feature of the device in one orientation...
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Abstract
A piezoelectric printing device includes a substrate and a piezoelectric plate. At least one row of drop ejectors is disposed along a row direction. Each drop ejector includes a nozzle in fluid communication with a pressure chamber that is bounded by side walls. The piezoelectric plate has a first surface that is disposed proximate to the first side of the substrate. A bonding layer is disposed between the piezoelectric plate and the substrate. An electrode layer is disposed between the first surface of the piezoelectric plate and the bonding layer. The electrode layer includes a signal line corresponding to each pressure chamber. Each signal line leads to a signal input pad. The electrode layer also includes ground traces disposed on both sides of each pressure chamber. The ground traces are electrically connected to at least one common ground bus that is electrically connected to at least one ground return pad.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]Reference is made to commonly assigned, patent application Ser. No. 16 / 912,769, entitled: “Piezoelectric printing device with outer layer surface electrode”; patent application Ser. No. 16 / 912,783, entitled: “Piezoelectric printing device with inner layer surface electrode”; patent application Ser. No. 16 / 912,816, entitled: “Piezoelectric printing device with vias through piezoelectric plate”; patent application Ser. No. 16 / 912,791, entitled: “Piezoelectric printhead and printing system”; and patent application Ser. No. 16 / 912,833, entitled: “Piezoelectric printhead for multiple inks and printing system”; filed concurrently herewith, and incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention pertains to the field of piezoelectric inkjet printing and more particularly to configurations of a piezoelectric printing device.BACKGROUND OF THE INVENTION[0003]Inkjet printing is typically done by either drop-on-demand or conti...
Claims
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IPC IPC(8): B41J2/14B41J2/045B41J2/16
CPCB41J2/14201B41J2/045B41J2/1623B41J2002/14491B41J2/1433B41J2/04581B41J2/14233B41J2002/14403
InventorXIE, YONGLINZHANG, XIAOFEI
OwnerSUZHOU RUIFA PRINTING TECH CO LTD